Miter-box.



C. G. GLADWIN.

MITER BOX.

APPLICATION TILED OCT. e, 1913.

1,089,761. Patented Mar.10,1914.

COLUMBIA PLANOORAIH C0,,WASHINOTDN. D. c.

CHARLES CLINTON GLADWIN, OF NEW YORK, N. Y.

Specification of Letters Patent.

Patented Mar. 10, 1914.

Application filed October 6, 1913. Serial No. 793,604.

To all whom it may concern Be it known that I, CHARLES CLINTON GLADWIN,a citizen of the United States of America, residing at New York city,borough of Manhattan, county and State of New York, have inventedcertain new and useful Improvements in Miter-Boxes, of which thetollowing is a full, clear, and exact description.

This invention relates to an improved gage and clamp combined, theobject being to provide a device of this character that will facilitatethe cutting or sawing oil of molding or, more especially, metal conduitsfor electrical conductors. My improved device is constructed to receivemoldings or conduits of various sizes and can be made of any desiredlength, special means being pro vided to clamp the moldings or conduitsin place.

I will now proceed to describe my invention in detail, the novelfeatures of which I will point out in the appended claims, referencebeing had to the accompanying drawing, forming part hereof, whereinFigure l is a longitudinal sectional view of my improved device, thesection being taken on a line 11 in Fig. 2; Fig. 2 is a top plan viewthereof; Fig. 3 a rear view thereof; and Fig. I is an enlargedcrosssectional view, the section being taken on a line 4- .1 in, Fig. 3.

The device as herein illust'ated is embodied in the form of a miter-box,that is to say, it consists of a channeled receptacle provided withtransverse slots for the passage of a saw, the said slots being in thisinstance disposed at a right angle to the sides of the receptacle orbox.

Referring to the drawing, the receptacle or box is indicated by 1 andthe transverse slots by 2 and 3. The box 1 preferably consists ofupstanding walls 4 and 5 and a bottom 6, the slots 2 and 3 being cut inthe walls l and To firmly hold the molding or conduit in the box, Iprovide a bracket 7 carried by (in this instance) the wall 4. Thebracket 7 consists of a cover-plate 7 which extends from asupportingplate 7 To render the bracket 7 adjustable vertically, Isecure the same to the wall l by means of set-screws 8 which passthrough slots 9 in the supporting plate 7 The bracket 7 carries aclamping-lever 10, provided with a cam 10, and a clamping screw 11. Thelever 10 is pivoted to the bracket 7 at 12 and is adapted to be swungupwardly to release a molding or conduit and for the insertion of thesame, and downwardly to clamp the inserted molding or conduit. The screw11 is used as an auxiliary clamp or it may be used to clamp the moldingor conduit withoutthe use of the clamping lever 10. it is obvious thatthe lever 10 and clamping screw 1.1 act to hold the article to be cutdown against the bottom (5. The lever 1.0 is used to clamp conduits ofstandard thickness, and in this event can be used without the screw 11.The clamping screw 11 can be used to hold moldings or conduits ofvarious thicknesses. To hold the article to be cut against the wall 1, Iemploy clamping screws 13. A portion of an electrical conduit indicatedby 14;. Should it be desirable to secure the gage to a table or support,I provide the bottom 01 same with openings 1.") through which screws canbe passed. By adjusting the bracket 7 vertically, the lever 10 isrendered adaptable for chunping conduits of different thicknesses, butit is somewhat more limited in this respect than the screw 11.

I provide a guide-slot 2 and 3 at each end so as to render the gageoperable in the hands of either a right or left-handed workman. When amolding or conduit is clamped in the box, a saw is placed in the slot 2or 3 and the said molding or conduit cut with a greater degree ofaccuracy than if laid upon a table and cut to a mark. As can be seen inFig. l the cam 10 on the lever 10 passes through a slot 16 in the cover7 Having now described my invention, what I claim and desire to secureby Letters Patent is:

1. A miter-box comprising a channeled receptacle provided with guideslots in the side walls thereof, said side walls being of di'l'ferentheights, a vertically adj ustablc support carried by the higher of saidside walls and located intermediate said slots, said verticallyadjustable support consist ing of a supporting plate provided withslots, binding screws passing through said slots and engaging theadjacent side wall, a cover plate carried by said supporting plateextending over the gap between said side walls, said cover plate beinprovided with a slot, a lever pivoted in said slot, a clamping camcarried by said lever and extending into said gap, and auxiliaryclamping screws carried by the lower side Wall.

A miter-box comprising a channeled receptacle provided with guide slotsin the side walls thereof, said, side walls being of different heights,a vertically adjustable support carried by the higher of said side wallsand located intermediate said slots, said vertically adjustable supportconsisting of a supporting plate provided with slots, binding screwspassing through said slots and engaging the adjacent side wall, a coverplate carried by said supporting plate extending over the gap betweensaid side walls, said cover plate being provided with a slot, a leverpivoted in said slot, a projection carried by said lever extending intosaid gap, a portion of said extension consisting of a clamping cam and astraight portion extending therefrom in parallelism with the bottomsurface of said gap, an auxiliary clamping screw carried by thecoverplate of said support, and auxiliary clamping screws carried by thelower wall.

Signed at New York city, N. Y., this th day of Gctober, 1913.

CHARLES CLINTON GLAD WIN. Witnesses RUTH MEYERs, li/[AURICE BLOCK.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C.

